What is cscui.dll?

The genuine cscui.dll file is a software component of Microsoft Windows Operating System by Microsoft.
The user interface for Microsoft's Client Side Caching application, this process is run only when manually initiated by the user. This process allows you to make changes to settings that permit server files be cached onto client workstations in order to be utilized offline. This feature was added first to Windows 2003 Server Edition. Founded in 1975, Microsoft's flagship product is the Windows operating system, which is installed on over 90% of workstations worldwide.

CSCUI stands for Client Side Caching UI

Cscui.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if cscui.dll is a Windows system file or if it belongs to an application that you can trust.

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Cscui.dll file information

The process known as Client Side Caching UI belongs to software Microsoft Windows Operating System by Microsoft (

Description: Cscui.dll is not essential for the Windows OS and causes relatively few problems. The file cscui.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 674,816 bytes (64% of all occurrences), 326,656 bytes and 18 more variants. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. The program has no visible window. There is no detailed description of this service. Cscui.dll is not a Windows core file. It can change the behavior of other programs or manipulate other programs. Cscui.dll is able to record keyboard and mouse inputs. Therefore the technical security rating is 59% dangerous, however you should also read the user reviews.

Recommended: Identify cscui.dll related errors

Important: Some malware disguises itself as cscui.dll, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the cscui.dll process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

cscui.dll is part of Windows and the Client Side Caching extension
Logon Synchronization

Summary: Average user rating of cscui.dll: based on 3 votes with 2 user comments. 2 users think cscui.dll is essential for Windows or an installed application. One user thinks it's probably harmless. One user is not sure about it.

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Best practices for resolving cscui issues

A clean and tidy computer is the key requirement for avoiding problems with cscui. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the cscui.dll process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

cscui.dll [all]